215132212 has 48 divisors (see below), whose sum is σ = 421848000. Its totient is φ = 95399424.

The previous prime is 215132147. The next prime is 215132221. The reversal of 215132212 is 212231512.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 215132212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347239 + ... + 347857.

It is an arithmetic number, because the mean of its divisors is an integer number (8788500).

Almost surely, 2^215132212 is an apocalyptic number.

It is an amenable number.

215132212 is a deficient number, since it is larger than the sum of its proper divisors (206715788).

215132212 is a wasteful number, since it uses less digits than its factorization.

215132212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 926 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 215132212 is about 14667.3859975116. The cubic root of 215132212 is about 599.1954141442.

Adding to 215132212 its reverse (212231512), we get a palindrome (427363724).

The spelling of 215132212 in words is "two hundred fifteen million, one hundred thirty-two thousand, two hundred twelve".